package 核心API的使用;
import java.io.*;
import java.net.ServerSocket;
import java.net.Socket;

public class TCPServer {
    public static void main(String[] args) {
        ServerSocket serverSocket = null;
        try {
            serverSocket = new ServerSocket(4700);
            System.out.println("服务器启动成功");
        } catch (IOException e) {
            e.printStackTrace();
            System.out.println("服务器启动失败");
        }
        //调用accept方法 可以接收客户端请求 并放回Socket对象
        Socket socket = null;
        try {
            socket = serverSocket.accept();
        } catch (IOException e) {
            e.printStackTrace();
        }
        String line;
        try {
            //接收客户端输入的内容
            DataInputStream is = new DataInputStream(socket.getInputStream());
            //输出内容到客户端
            DataOutputStream os = new DataOutputStream(socket.getOutputStream());

            System.out.println("Client:"+is.readUTF());//输出客户端发送的内容
            BufferedReader sin = new BufferedReader(new InputStreamReader(System.in));//键盘输入内容
            line = sin.readLine();
            os.writeUTF(line);//向客户端写入数据
            os.flush();//把缓存数据提交
        } catch (IOException e) {
            e.printStackTrace();
        }

    }

}
